This movie really did have a lot of potential. The scenes themselves felt quite claustrophobic. I would have liked to of scene a change in environment more often to add to the suspense. The ending felt really really rushed and extremely underwhelming. It also felt like the story itself started way too fast. A slower build in my opinion would have been better for the climax of the movie. Like I said, the movie had a lot of potential, the scenes were quite repetitive, and the ending in all honesty kind of sucked. The part where it turns the whole movie into a loop was cool, but everything in the end leading up to that was pretty boring. Again, this is all my opinion!